ABAP Select data from SAP table RJKWBZ_02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RJKWBZ_02 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to RJKWBZ_02. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the RJKWBZ_02 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_RJKWBZ_02 TYPE STANDARD TABLE OF RJKWBZ_02,
      WA_RJKWBZ_02 TYPE RJKWBZ_02,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <RJKWBZ_02> TYPE RJKWBZ_02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RJKWBZ_02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RJKWBZ_02
  INTO TABLE IT_RJKWBZ_02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKWBZ_02
*  INTO TABLE @DATA(IT_RJKWBZ_022).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_RJKWBZ_02 INDEX 1 INTO DATA(WA_RJKWBZ_022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RJKWBZ_02 ASSIGNING <RJKWBZ_02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKWBZ_02>-WBZSATZART = 1.
<RJKWBZ_02>-VERLAGSNR = 1.
<RJKWBZ_02>-WBZKUNNR = 1.
<RJKWBZ_02>-VERTRKENNZ = 1.
<RJKWBZ_02>-RECHZENTNR = 1.

ENDLOOP.

LOOP AT IT_RJKWBZ_02 INTO WA_RJKWBZ_02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKWBZ_02-WBZVORGART, sy-vline,
  WA_RJKWBZ_02-ABONR, sy-vline,
  WA_RJKWBZ_02-WBZTERMIN, sy-vline,
  WA_RJKWBZ_02-EXEMPLARE, sy-vline,
  WA_RJKWBZ_02-HEFTANZAHL, sy-vline,
  WA_RJKWBZ_02-AKTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKWBZ_02 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_RJKWBZ_02 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_RJKWBZ_02 INTO WA_RJKWBZ_02.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit JKWBZ, internal->external for field VERLAGSNR
CALL FUNCTION 'CONVERSION_EXIT_JKWBZ_OUTPUT'
  EXPORTING
    input =                      WA_RJKWBZ_02-VERLAGSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKWBZ_02-VERLAGSNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit JKWBZ, internal->external for field WBZKUNNR
CALL FUNCTION 'CONVERSION_EXIT_JKWBZ_OUTPUT'
  EXPORTING
    input =                      WA_RJKWBZ_02-WBZKUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKWBZ_02-WBZKUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit JKWBZ, internal->external for field VERTRKENNZ
CALL FUNCTION 'CONVERSION_EXIT_JKWBZ_OUTPUT'
  EXPORTING
    input =                      WA_RJKWBZ_02-VERTRKENNZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKWBZ_02-VERTRKENNZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit JKWBZ, internal->external for field RECHZENTNR
CALL FUNCTION 'CONVERSION_EXIT_JKWBZ_OUTPUT'
  EXPORTING
    input =                      WA_RJKWBZ_02-RECHZENTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKWBZ_02-RECHZENTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit JKWBZ, internal->external for field ABONR
CALL FUNCTION 'CONVERSION_EXIT_JKWBZ_OUTPUT'
  EXPORTING
    input =                      WA_RJKWBZ_02-ABONR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKWBZ_02-ABONR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EXEMPLARE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKWBZ_02-EXEMPLARE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKWBZ_02-EXEMPLARE.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RJKWBZ_02_STR, 
WBZSATZART TYPE STRING,
VERLAGSNR TYPE STRING,
WBZKUNNR TYPE STRING,
VERTRKENNZ TYPE STRING,
RECHZENTNR TYPE STRING,
WBZVORGART TYPE STRING,
ABONR TYPE STRING,
WBZTERMIN TYPE STRING,
EXEMPLARE TYPE STRING,
HEFTANZAHL TYPE STRING,
AKTION TYPE STRING,
WERBKZSCHL TYPE STRING,
WERBKZBETR TYPE STRING,
PLZ TYPE STRING,
ANZ_MONATE TYPE STRING,
LAND TYPE STRING,
ANREDE TYPE STRING,
NAME TYPE STRING,
ANSCHZUS TYPE STRING,
ANSCHZUSKZ TYPE STRING,
STRASSE TYPE STRING,
ORT TYPE STRING,
VERSANDART TYPE STRING,
WBZTERMIN_2 TYPE STRING,
FEHLERNR TYPE STRING,
NAMENSZUSATZ TYPE STRING,
WAEHRUNG TYPE STRING,
FILLER28 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKWBZ_02_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_RJKWBZ_02_STR-WBZSATZART sy-vline 
WA_RJKWBZ_02_STR-VERLAGSNR sy-vline 
WA_RJKWBZ_02_STR-WBZKUNNR sy-vline 
WA_RJKWBZ_02_STR-VERTRKENNZ sy-vline 
WA_RJKWBZ_02_STR-RECHZENTNR sy-vline 
WA_RJKWBZ_02_STR-WBZVORGART sy-vline 
WA_RJKWBZ_02_STR-ABONR sy-vline 
WA_RJKWBZ_02_STR-WBZTERMIN sy-vline 
WA_RJKWBZ_02_STR-EXEMPLARE sy-vline 
WA_RJKWBZ_02_STR-HEFTANZAHL sy-vline 
WA_RJKWBZ_02_STR-AKTION sy-vline 
WA_RJKWBZ_02_STR-WERBKZSCHL sy-vline 
WA_RJKWBZ_02_STR-WERBKZBETR sy-vline 
WA_RJKWBZ_02_STR-PLZ sy-vline 
WA_RJKWBZ_02_STR-ANZ_MONATE sy-vline 
WA_RJKWBZ_02_STR-LAND sy-vline 
WA_RJKWBZ_02_STR-ANREDE sy-vline 
WA_RJKWBZ_02_STR-NAME sy-vline 
WA_RJKWBZ_02_STR-ANSCHZUS sy-vline 
WA_RJKWBZ_02_STR-ANSCHZUSKZ sy-vline 
WA_RJKWBZ_02_STR-STRASSE sy-vline 
WA_RJKWBZ_02_STR-ORT sy-vline 
WA_RJKWBZ_02_STR-VERSANDART sy-vline 
WA_RJKWBZ_02_STR-WBZTERMIN_2 sy-vline 
WA_RJKWBZ_02_STR-FEHLERNR sy-vline 
WA_RJKWBZ_02_STR-NAMENSZUSATZ sy-vline 
WA_RJKWBZ_02_STR-WAEHRUNG sy-vline 
WA_RJKWBZ_02_STR-FILLER28 sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.